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dotUltimate vs PerfView: catalog facts
dotUltimate	PerfView
Paid Commercial JetBrains product; see the website for current pricing.	Free Free and open source from Microsoft.
Windows, macOS, Linux	Windows
Covers editing, profiling and code coverage in one package Works with Visual Studio, Visual Studio Code or a standalone cross-platform IDE	Analyses both CPU and memory performance issues Free tool maintained by Microsoft
Commercial product, not free Aimed specifically at .NET and game development	Windows only Steep learning curve for people new to profiling
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.